A new experiment to search for the invisible decay of the orthopositronium

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We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confidence sensitivity in the branching ratio as low as $10^{-8}$. Evidence for this decay mode would unambigously signal new physics: either the existence of extra--dimensions or fractionally charged particles or new light gauge bosons. The experimental approach and the detector components of the proposed experiment are described.
Based on a talk given at Workshop on Positronium Physics, Zurich, Switzerland, 30-31 May 2003

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High Energy Physics - Experiment

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http://salesiana.dossiersoluciones.com/handle/123456789/37669

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ex/0404037
 http://arxiv.org/abs/hep-ex/0404037

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arXiv